I did have a look at the reversemapping.config file. There was bug while migrating old versions of this file.We have fixed this and the fix will be available in the next release..
As a workaround, you can search for occurrences of 'java.lang.Object' in the reversemapping.config and replace them with 'System.Object'
Your Telerik points have been updated.
All the best,
the Telerik team